Aspedamite
A variety of Minerals
What is Aspedamite?
Aspedamite is a very rare mineral, one of two natural heteropolyniobates. Its chemical formula (one of the possible formulas) is complex and shows the presence of essential vacancies: []12(Fe2Fe)Nb4(ThNb9Fe2TiO42)(H2O)9(OH)3. Its structure (isometric, space group Im3) is the same as of the second known heteropolyniobate - menezesite. Aspedamite is somewhat similar to another mineral from Norway, peterandresenite, which is a hexaniobate.
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Quick Facts
Physical Properties
- Color
- Brownish orange to deep red
- Hardness (Mohs)
- 3 - 4
- Density
- 4.07 g/cm³
- Streak
- Very pale orange
Chemical Properties
- Chemical Formula
- ☐ 12(Fe+23Fe2+)Nb4(ThNb9Fe+23 Ti4+O42)(H2O)9(OH)3
- Elements
- Fe, H, Nb, O, Th, Ti
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